Ask question

Ask question

All categories

2 years ago

14

A semi has a net force of 13,000 N and is accelerating at a rate of 6.5 m/s^2. What is the mass of the semi? *

1 answer:

Evgen [1.6K]2 years ago

4 0

Example 1: An 850-kg car is accelerating at a rate of 2.4m/s2 to the right along a ... 2) A nonzero net force ΣF acting on mass M causes an acceleration a in it such that ΣF = Ma. The acceleration has the same direction as the applied net force. ... (b) Knowing that the crate is being pushed to the left by a 53-N force

You might be interested in

Which force acts as an object to move it from rest or a constant straight-line motion?

podryga [215]

Answer: C

Explanation: The correct answer would be Inertial. I take the quiz and got the answer rght!!

8 0

3 years ago

Erica is participating in a road race. The first part of the race is on a 5.2-mile-long straight road oriented at an angle of 25

Sveta_85 [38]

Answer:

8.6 miles

Explanation:

We need to calculate the components of the total displacement along the east-west and north-south directions first.

In the first part, Erica moves 5.2 miles at 25∘ north of east. So the components of this displacement along the two directions are:

East: $d_{1x} = 5.2 cos 25^{\circ}=4.7 mi$

North: $d_{1y} = 5.2 sin 25^{\circ}=2.2 mi$

In the second part, Erica moves 5.0 miles north. So, the components of this displacement are:

East: $d_{2x}=0$

North: $d_{2y} = 5.0 mi$

So the components of the total displacement are

East: $d_x = d_{1x}+d_{2x}=4.7 + 0 = 4.7 mi$

North: $d_y = d_{1y}+d_{2y}= 2.2 + 5.0 = 7.2 mi$

Therefore the magnitude of the displacement, which is the straight-line distance from the starting point to the end of the race, is

$d=\sqrt{d_x^2 +d_y^2}=\sqrt{4.7^2+7.2^2}=8.6 mi$

5 0

3 years ago

A boy rides his bike 15m due east and then 33m due north. Find his displacement

Svetllana [295]

Take a right triangle and apply pythagorean theorem where the displacement is the hypotenuse:
We get 36.25m

8 0

3 years ago

the image of a mountain can be seen on the surface of calm water. what property of light is demonstrated?

Valentin [98]

<span>I say it's the regular reflection</span>

3 0

3 years ago

Read 2 more answers

When hitting the golf ball the golfer swings the golf club to keep it in contact with the golf ball for as long as possible. The

Gnesinka [82]

Answer:

Explanation:

We shall apply the concept of impulse which is given as follows .

Impulse = force x time

Impulse = change in momentum

If u be the initial velocity of golf ball and v be the final velocity , m be the mass

change in momentum

= mu - ( - mv )

= mu+ mv

If F be the force applied and t be the duration of touch with the ball

Impulse = F x t

F x t = mu + mv

mv = Ft - mu

For given mu , greater the value of t , greater will be the value of v

so v is increased when t is increased .

Increased value of v will help in achieving greater distance attained by

golf ball

8 0

2 years ago